Honeycomb structure body molding die

a technology of structure body and honeycomb, which is applied in the direction of dough shaping, manufacturing tools, food shaping, etc., to achieve the effect of high precision and deteriorated strength

Active Publication Date: 2009-01-29
DENSO CORP
View PDF7 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a honeycomb structure body molding die that can prevent non-uniform thickness and deteriorated strength of the outer circumferential skin, which is a common issue in molded honeycomb structures. The die has a stepped section with a central slit recess forming surface and an outer circumferential slit recess forming surface, and a guide ring with an upright support section and a guide section protruding radially inward. The guide section has a clearance with the outer circumferential sidewall of the stepped section to provide a squeezing outlet through which the molding material flows. The invention enables the formation of the outer circumferential skin with high precision and stability, resulting in increased quality of the honeycomb structure body.

Problems solved by technology

This results in a capability of suppressing the formation of the outer circumferential skin with defects such as nonuniform thickness and deteriorated strength, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Honeycomb structure body molding die
  • Honeycomb structure body molding die
  • Honeycomb structure body molding die

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0041]Now, a honeycomb structure body molding die of an embodiment according to the present invention is described below with reference to FIGS. 1 to 3 of the accompanying drawings.

[0042]As shown in FIGS. 1 to 3, the honeycomb structure body molding die 1 of the present embodiment serves to mold a honeycomb structure body 8 (see FIG. 6) having honeycomb-shaped cell walls 81, a large number of cells 82 defined with the cell walls 81, and an outer circumferential skin 83 (see FIG. 6) with the cell walls 81 and the outer circumferential skin 83 being unitarily formed in structure.

[0043]As shown in FIGS. 1 and 2, the honeycomb structure body molding die 1 is comprised of a die main body 2 and an outer circumferential guide ring 5. The die main body 2 has guide holes (not shown) through which the guide ring 5 is fixedly mounted. Likewise, the guide ring 5 has guide holes through which the die main body 2 is fixedly located.

[0044]As shown in FIGS. 1 and 2, the die main body 2 includes a f...

second embodiment

[0073]A honeycomb structure molding die 1A of a second embodiment according to the present invention is described below in detail.

[0074]The honeycomb structure molding die 1A of the present embodiment differs from the honeycomb structure molding die 1 of the first embodiment in respect of a guide ring 5A and associated component parts and, therefore, description will be made with a focus on such differing points.

[0075]As shown in FIG. 7, with the honeycomb structure molding die 1A of the present embodiment, a die main body 2A has a central slit recess forming region 61, formed with the slit recesses 41, and an outer circumferential skin forming feed-bore forming region 62 formed in an area outside of the central slit recess forming region 61. The central slit recess forming region 61 corresponds to an area involving a slit recess forming surface 400 defined on a surface of the stepped section 42. The outer circumferential skin forming feed-bore forming region 62 takes the form of an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
inner diameter r1aaaaaaaaaa
inner diameter r2aaaaaaaaaa
Login to View More

Abstract

A honeycomb structure body molding die is disclosed including a die main body, having a feed bore section and a slit recess section, and a guide ring having an upright support section and a guide section carried on the upright section, which includes a stepped section and has a central slit recess forming section, provided on the stepped section, and an outer circumferential slit recess forming surface. The die main body has a non-opposing region, formed on an area outside the stepped section, in which the outer circumferential slit recess forming surface does not axially face the guide section, while having a feed bore closing region closing the feed bores. The die main body has outer circumferential-skin forming material feed passages formed in an area outside the feed bore closing region for feeding the molding material to a squeezing outlet for forming an outer circumferential skin.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is related to Japanese Patent Application No. 2007-191780, filed on Jul. 24, 2007, the content of which is hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Technical Field of the Invention[0003]The present invention relates to a honeycomb structure body molding die for extrusion molding a honeycomb structure body.[0004]2. Description of the Related Art[0005]There has been known a honeycomb structure body 8 (see FIG. 6) as a catalyst carrier for carrying a catalyst that purifies exhaust gases emitted from an internal combustion engine of an automotive vehicle or the like. The honeycomb structure body 8 is, for instance, honeycomb-shaped cell walls 81, a large number of cells 82 surrounded with the cell walls 81, and a cylindrical outer circumferential skin 83 covering an outer circumferential sidewall.[0006]In general, the honeycomb structure body 8 is manufactured upon extrusion molding a material incl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(United States)
IPC IPC(8): B29C47/00B29C48/11B29C48/30
CPCB23P15/243B28B3/2672B29L2031/60B29C47/0028B29C47/12B28B3/269B29C48/11
InventorASAOKA, TADANOBU
OwnerDENSO CORP